Wire-drawing apparatus.



3 SHEETS-SHE T 1.

PATENTED JAN. a, 1907- Y l 0. A. PAPE.

ywmf; DRAWING APPARATUS.

APPLICATION FILED Nov. 3,v 1905. v

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G. A. PAFF.

WIRE DRAWING APPARATUS.

MPL10-umn FILED Nov. 3. 1905.

SHEETS-SHEET 2.

wvVA n Illlnll PATENTED JAN.V8, 1907.. G1 A. PAPP- WIRE DRAWING APPARATUS.

APPLIOATIN FILED NOV. 3', 1906.

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neven-[oa I ff @f UMTED STATES PATEK! OFFICE.

GEORGE A. PAEF, OE SHARON, PENNSYLVANIA. ASSIGNOR To THE AMERICAN STEEL a WIRE COMPANY, OE ii'oEcESrER, MASSA- cHUSErrS, A coaPoRA'rioN OE NEW JERSEY.

WIRE-DRAWING APPARATUS .To all whom it may concern:

Be it known that I, GEORGE A. PAFF, of Sharon, Mercer county, Pennsylvania, have invented a new and useful lmprovement in Wire-Drawing Apparatus, of which the following is a ful1,`clear, and exact descriptionm `Fig. 4 is a top plan view of the sheave. Fig.

5 1s a perspective view of the clutch, and Fig.' 6is a detail view of a suitable Wireclamping device.

In the operation of reducing Wire by drawing it through a die it is necesssary to pro-l vide the drawing-frame With a draw-out arrangement so constructed that a tong or grip may be' broughtvery closely to the drawingdie and pinch the pointed end of the Wire protruding therethrough to pull a sullicient ength of the Wire. through the die to enable the operator to fasten its end to the drawingblock. Various means` have heretofore been employed for this purpose, but such means have been more or less complicated and cumbersome and arranged in a. manner to interfere With the operator.

V The object of my invention is to provide means of very simple character applied to fthe drawing-block and its driving-shaft by means of Which thenecessary amount of Wire can be drawn through the die to permit -its attachment to such block and Which are so constructed and arranged as to be out of the Way of the operator and to rapidly and ef-I fectively accomplish the desied result.

The invention consists in a novel construction and arrangement and combination of parts, all substantially as hereinafter described, and pointed out in the appended claims. v

In the drawings the `numerals 2, 3,- and 4 designate three drawing-blocks of the usual.

character mounted lupon driving-Shafts 5 Specification of Letters Patent. Application nea November 3.1905. sen-a1 No. seam.

Patented Jan. 8, 1907.

the usual manner in a bench or ytable 6. `In

practice it is usual to mounta considerable number of these blocks upon a long bench or table. Fig. 1 shows three of such blocks, the table or bench being broken away. The shafts 5 are driven by any suitable or'usual driving-gear 7.

8 designates clutch-hubs, one of which is "fmounted on a squared portion 9' of each vshaft 5 to revolve therewith.

These hubs 'are similar to the hubs generally employed for driving the drawing-blocks with the ex-V ception that they are provided with the depending lugs 1( for the purpose hereinafter described. The blocks 3 are loosely mounted on the shafts 5 and are engaged With and disengaged from the clutches 8 by any usual or suitable treadle-lever mechanism 11, as indicated in dotted lines at the upper lefthandportion of Fig. 1. As this mechanism is common, I have not shown it applied to the other blocks, and itis unnecessary todo# scribe it in detail. j

12 designates a grooved sheave which` is v loosely mounted on a depending boss 8a of the clutch member 8 and has on its upper surface the lugs or abutments 14, 'Which are designed to be engaged by the depending lugs 1() of such clutch member to' rotatably connect the sheave with the shaft 5 when the sheave is moved vertically on the boss 8a. For the purpose of raising the sheave the treadle-lever 15 is provided, actuated by a push-rod 16 and `carrying lifting-rods 17, Which are adapted to engage the under side of the sheave at substantially diametrically opposite points. In order to get around the shaft 5 and to enable the push-rods 17 to get a central lift upon the sheave, these rods are connect ed .to a yoke 18 -Which extends around the Shaft 5, as shown in Fig. 3, and is connected to the lever 15 by a rod` 1,6.

Formed on the uppersurface' of .the sheave 1.2 are two vertical projecting diametrically i opposite lugs 19 and 20, having each a" squared shoulder 21 and an inclined upper Surface leading up to such Shoulder, the lug 2O being somewhat shrter than the lug'. 1 9,

as shown in Fig. 2, and at agreater distance from the center of the sheave than .theV lug 19. Secured to the bench or4 table 6 are two xed brackets 23, which have portions 24 overhanging the peripheral portion of-the sheave in the 'manner shown in Fig. 2.

. 25 designates any usual or suitable wireclarnping device att-ached to the drawingblocks.

26 is a rope or cable, one of which isfattached to each of the sheaves 12 and which has at its free end a suitable wire-clamping device 27, (one form of which is shown in detail in Fig, 6.)`V`

28 designates the usual vises or diaphragms in which the drawing-dies are held, and 29 indicates the wire to be drawn. ,n Each of the drawing-blocks is provided with the clutch and sheave arrangement abov e described, that upon each'block'being arranged to make the preliminary draw of wire Jfor the next preceding block. Thus in Fig. 1 the arrangement of the/block 3 is shown in position-to make the draw for the block 2, while the block 4 is illustrated as having a drawn wire coiled about it.

The operation is as follows: The drawingblocks are lowered into driving engagement with the shaft 5 by means of the treadle mechanism 11 or in any other usual or suitable manner. When it is desired to make a preliminary draw, the operator places his foot upon the'push-rod 16, thereby actuating the lever 15 to raise the push-rods 17iand lift the sheave 12 into position where it would be engaged by thedepending lugs 10 of the revolving clutch member 8, the wire to be drawn having been gripped close to the drawing-die by means of the gripping device 27 at the end of the rope 26. The sheave 12 .is now rotated, the shorter projection 2() thereon .passingunderneath the overhanging projeetions 24 of the brackets 23, while the longer projection, being nearer the center,

escapes the first of such projections on its rst half-revolution. When, however, the sheave has made substantially a complete revolution, which draws a sufficient length of wire for attachment to the drawing-block, the projection 19 will engage with one of the overhanging portions 24. The cam-surfaces of the projections 19 and 20 riding against the portions`24 cause the sheave to be forced ldownwardly out of driving engagement with the clutch member, thereby stopping the rotation of the sheave., The drawn portion of the -wire is then attached to the drawingblock and the operation of drawing commences. Inasmuch as the projections 19 and20 are arranged diametricallyopposite t'o each other it will be seen that their camaotion will effect a true vertical movement. of the sheave without causing the latter to bind on the boss of the 'clutch member.

The yadvantages of my invention result from the simple and effective construction i and arrangement of the parts, the ease with which they may be operated without in any way interfering with the operator, and also from the fact that there results but little waste iu wire, owing to thefact thatonlyT the .immediate end portion thereof engaged by in this manner also utilized to form one member ol" the clutch and to carry the cam and stop devices. This greatly sim )lifies the construction and arrangement oi the sheave. lt furthermore brings the sheave into paral- I lel relation with the drawing-block, so that it may exert a direct pull upon the'wirc without the use of intermediate pulleys.

Many changes may be made in the details of construction and arrangement of the parts wit-hout departing from my invention, -since 1. In wire-drawing apparatus, the combination with a drawing-block having a clutch member, of a sheave loosely mounted on the same shaft with the drawing block and adapted 'to be moved into and out of engagement with such clutch member, and a wiregripping device attached to the sheave substantially as described.

2. In wire-drawing apparatus, the combina tion with a drawing-block having a clutch member, vcf-a wire-drawing sheave loosely mounted on the same shaft with the drawingblock and means for 'moving such sheave into driving engagement with the clutch member, and 'means for disengaging the sheave from the clutch member after substantially a complete revolution of the sheave; substantially as described.

3. In wire-drawing apparatus, the combination with a drawingfblock, a wire-drawing sheaye loosely mounted on the same shaft with the drawing-.block and means for effecting a rotating engagement between the sheave and block, and means for automatically disengaging the sheave from the block'; substantially as' described.

4. In wire-drawing apparatus, the combination with a drawing-block, of a rotating loosely-mounted wire-drawing sheave loosely mounted on the same shaft with the drawing-block and actuating means for moving said sheave into and out of driving engagementA with the block,l and cam means for automatically eiecting the disengagement of the sheave; substantially as described.

5. In wire-drawing apparatus, the combination of a drawing-block having a clutch member, a wire-drawing sheave mounted on said clutch member and adapted to be moved IOO into and ont of driving engagement there'- In testimony whereof I have hereunto set with, means for effecting such engagement, my hand'. said sheave having cams thereon, and rela- GEO A PAFF tively fixed means arranged to engage the cams to eiect the disengagement of the Witnesses: y t sheave and clutch member at a predeter- A. CHADWICK,v mined time; substantially as described. D. S. MURBLEY. 

